K.C.S.E Biology Q & A - MODEL 2008PP1QN26
State one use of each of the following excretory products of plants:
(a) colchicine; (b)pawpaw 
answers
(a) Inducing polyploidy/ treatment
(b) Meat tenderizer K.C.S.E Biology Q & A - MODEL 2008PP1QN30
The diagram below shows two fused bones of a mammal
(a) Identify the fused bone
(b) Name the (i) Bone that articulates at the point labelled F (ii) The hole labelled G
ANSWERS
(a)Pelvic girdle
(b) (i) Femur (ii) Obturatar foramen. K.C.S.E Biology Q & A - MODEL 2008PP1QN25
Giving a reason in each case, name the class to w which each of the following organisms
Bean plant Reason Bat Reason
ANSWERS
Bean plant - Dicotyledonae
Reason Leaves have net veined; two cotyledon; tap root system; xylem with phloem in between the arms Bat Flying mammal Reason Have sweat glands; 3 ear ossicle; presence of fur; mammaring glands K.C.S.E Biology Q & A - MODEL 2008PP1QN24
Name the sites where light and dark reactions of photosynthesis take place
Light reaction Dark reaction
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN23
The diagram below shows a human tooth
(a) Identify the tooth
(b) How is the tooth adapted to its function (c) State the role of the following vitamins in the human body (i) C (ii) K
ANSWERS
(a) Canine
(b) Pointed/ sharp for piercing/ tearing/ cutting food (c) (i) C- Absorption of lien/ prevent scurvy/ quick healing of wounds/ best immunity/ ant oxidants/ prevents anaemia/ formation of connective tissues/ ​ K – blood clothing
K.C.S.E Biology Q & A - MODEL 2008PP1QN22
State two characteristics of aerenchyma tissue
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN21
Name a growth inhibitor in seeds
ANSWER
K.C.S.E Biology Q & A - MODEL 2008PP1QN21
What is seed dormancy
ANSWER
​K.C.S.E Biology Q & A - MODEL 2008PP1QN20
Name the opening to the chamber of the heart of an insect
ANSWER
K.C.S.E Biology Q & A - MODEL 2008PP1QN20
Name an organism which has single circulatory system
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN20
what is a single circulatory system
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN19
The diagram below represents a tissue obtained from an animal
(a) Identify the tissue
(b) State the functions of the tissue named ( a) above
ANSWERS
(a) Cardiac muscle
(b) Contraction of the heart
K.C.S.E Biology Q & A - MODEL 2008PP1QN18
How is the epidermis of a leaf of a green plant adapted to its function
ANSWERS
K.C.S.E Biology Q & A - MODEL 2008PP1QN17
Account for the following phases of a sigmoid curve of a growth of an organism
(a) Lag phase (b) Plateau phase
ANSWERS
(a) Few dividing cells/ cells not adjusted to surrounding environment
(b) Most cells fully differentiated/ rate of cell division equals rate of cells dying K.C.S.E Biology Q & A - MODEL 2008PP1QN16
The diagram below represents a set up that was used to investigate certain process in a plant
(a) State the process that was being investigated
(b) State a factor that would affect the process
ANSWERS
(a) Photosynthesis
(b) Carbon (iv) Oxide/ Temp/ chlorophyll |
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